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SUMMARY
The changes in a population of springbok confined to a paddock on a farm in the Karoo were observed for 12 years. The observations and data on the age structure, obtained from skulls in the paddock, were used to construct a model of the population changes over the first 10 years. In the 11th year the population was severely depleted as a result of drought. Possible reasons for the magnitude of the population decrease are discussed in relation to the model and the losses in other paddocks on the same farm.